Question

a) the amplitude
b) the wavelength
c) the velocity of the wave

Answer 1

Hi friend,

A) 2

B)20

C) velocity = wavelength x frequency
= 20 x 50
= 1000

Answer 2

Hey friend,

_________

Here,

Amplitude = 2 m 

Wavelength = 20

Velocity = wavelength x frequency 
             = 20 x 50
             = 1000.

___________

hope it helps